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Finding the Fourth Proportional to 573,485.13, 791,429.36 and 315,372.65

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Solution

The fourth proportional to 573,485.13, 791,429.36 and 315,372.65 is: 435,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,485.13 : 791,429.36 = 315,372.65 : x
  2. Step 2: Convert to fraction form
    573,485.13/791,429.36 = 315,372.65/x
  3. Step 3: Cross multiply
    573,485.13x = 791,429.36 × 315,372.65
  4. Step 4: Simplify right side
    573,485.13x = 249,595,169,016.99
  5. Step 5: Solve for x
    x = 249,595,169,016.99/573,485.13
  6. Step 6: Final answer
    x = 435,225.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.